CA2344940A1 - Method and apparatus for the thickening of fiber suspensions - Google Patents

Method and apparatus for the thickening of fiber suspensions Download PDF

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Publication number
CA2344940A1
CA2344940A1 CA002344940A CA2344940A CA2344940A1 CA 2344940 A1 CA2344940 A1 CA 2344940A1 CA 002344940 A CA002344940 A CA 002344940A CA 2344940 A CA2344940 A CA 2344940A CA 2344940 A1 CA2344940 A1 CA 2344940A1
Authority
CA
Canada
Prior art keywords
thickening
pulp
shaft
thickener
screw thread
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002344940A
Other languages
French (fr)
Other versions
CA2344940C (en
Inventor
Antero Laine
Risto Ljokkoi
Olavi Pikka
Sami Siik
Harri Qvintus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andritz Oy
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FI982043A external-priority patent/FI112256B/en
Application filed by Individual filed Critical Individual
Publication of CA2344940A1 publication Critical patent/CA2344940A1/en
Application granted granted Critical
Publication of CA2344940C publication Critical patent/CA2344940C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The present invention relates to the thickening of pulp suspensions. A low consistency pulp suspension is fed to a pre-thickener (10) through an inlet conduit (18). A layer of thickened pulp, formed on a filter surface (22), is pushed along the filter surface by a cleaning member to the discharge end of the pre-thickener and is discharged through the outlet (20). The cleaning member comprises a rotating shaft (30), on which shaft at least one screw thread (32) is fixed so as to leave a free space between the shaft and the screw thread. Essentially non-thickened pulp is allowed to flow through the apparatus via this space.
CA002344940A 1998-09-23 1999-09-22 Method and apparatus for the thickening of fiber suspensions Expired - Lifetime CA2344940C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FI982043 1998-09-23
FI982043A FI112256B (en) 1998-09-23 1998-09-23 Pulp thickener for use in pulp treating, i.e. for fiber suspensions of a paper and wood processing industry has a valves in the discharge conduits for controlling the operation of the pre-thickener
FI982565 1998-11-26
FI982565A FI112385B (en) 1998-09-23 1998-11-26 Method and apparatus for treating pulp
PCT/FI1999/000778 WO2000017443A1 (en) 1998-09-23 1999-09-22 Method and apparatus for the thickening of fiber suspensions

Publications (2)

Publication Number Publication Date
CA2344940A1 true CA2344940A1 (en) 2000-03-30
CA2344940C CA2344940C (en) 2005-11-15

Family

ID=26160645

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002344940A Expired - Lifetime CA2344940C (en) 1998-09-23 1999-09-22 Method and apparatus for the thickening of fiber suspensions

Country Status (11)

Country Link
US (2) US6767432B1 (en)
EP (1) EP1125016B1 (en)
JP (1) JP4724299B2 (en)
AT (1) ATE235595T1 (en)
BR (1) BR9913950B1 (en)
CA (1) CA2344940C (en)
DE (1) DE69906347T2 (en)
ES (1) ES2194507T3 (en)
FI (1) FI112385B (en)
PT (1) PT1125016E (en)
WO (1) WO2000017443A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0400940L (en) * 2004-04-07 2005-08-16 Kvaerner Pulping Tech Method and apparatus for diluting dewatered cellulose pulp
US7809462B2 (en) * 2007-05-16 2010-10-05 Johansson Ola M Power savings method for rotating pulp and paper machinery
SE531514C2 (en) * 2007-09-17 2009-05-05 Ebbe Hoden Method and apparatus for dewatering a fiber suspension supplied by a nozzle assembly
DE102008023000A1 (en) * 2008-05-09 2009-11-12 Voith Patent Gmbh Suspension i.e. pulp suspension, conveying and draining method for paper processing system, involves conveying drained suspension into thick material outlet from device, where pressure existing at outlet is higher than pressure at inlet
AT12606U1 (en) * 2011-05-20 2012-08-15 Applied Chemicals Handels Gmbh SCREW PRESS
US10654235B2 (en) * 2012-06-13 2020-05-19 Iogen Energy Corporation Method for removing liquid from a slurry

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3076610A (en) * 1960-07-14 1963-02-05 Escher Wyss Gmbh Process for the preparation of fibre suspensions
GB1201635A (en) * 1966-10-20 1970-08-12 Defibrator Ab Improvements in or relating to dewaterers for a fibre pulp suspension
US3833465A (en) * 1971-04-27 1974-09-03 Miller Bros Co Ltd Single pulping system for multiple pulp stocks used in paperboard machine
JPS5030002A (en) * 1973-06-28 1975-03-26
IT1045140B (en) 1975-07-02 1980-05-10 Gervasi Enzo CONTINUOUS FILTER WITH CONTINUOUS REMOVAL OF THE PANEL
JPS56128390A (en) * 1980-03-07 1981-10-07 Risaburou Takahashi Upright screw thickener in paper making
JPS58153509A (en) * 1982-03-08 1983-09-12 Kuri Kagaku Sochi Kk Continuous filter
SE436287B (en) * 1983-04-12 1984-11-26 Sunds Defibrator SET AND DEVICE FOR MANUFACTURING FIBER MASS FROM LIGNOCELLULOSALLY MATERIAL
US4582568A (en) * 1983-09-15 1986-04-15 Beloit Corporation Apparatus for controlling the consistency of a pulp suspension
US4632729A (en) * 1984-05-01 1986-12-30 Laakso Oliver A Chip presteaming and air washing
FI81137B (en) * 1986-12-17 1990-05-31 Ahlstroem Oy FOERFARANDE OCH ANORDNING FOER URVATTNING AV FIBERSUSPENSIONER.
EP0298499B1 (en) * 1987-07-08 1994-03-16 A. Ahlstrom Corporation Method and apparatus for thickening fiber suspension
JP2597147B2 (en) * 1988-06-20 1997-04-02 相川鉄工株式会社 Screw press for papermaking
US5181989A (en) * 1990-10-26 1993-01-26 Union Camp Patent Holdings, Inc. Reactor for bleaching high consistency pulp with ozone
FI82082C (en) * 1989-03-29 1991-12-10 Ahlstroem Oy FOERFARANDE OCH ANORDNING FOER BEHANDLING AV MASSA.
SE464641B (en) * 1989-06-29 1991-05-27 Kamyr Ab DEVICE FOR DRAINAGE OF MASS

Also Published As

Publication number Publication date
US20040084160A1 (en) 2004-05-06
FI982565A (en) 2000-03-24
EP1125016A1 (en) 2001-08-22
EP1125016B1 (en) 2003-03-26
FI112385B (en) 2003-11-28
WO2000017443A1 (en) 2000-03-30
US7229527B2 (en) 2007-06-12
JP2002526676A (en) 2002-08-20
ATE235595T1 (en) 2003-04-15
DE69906347D1 (en) 2003-04-30
ES2194507T3 (en) 2003-11-16
JP4724299B2 (en) 2011-07-13
CA2344940C (en) 2005-11-15
BR9913950A (en) 2001-06-12
FI982565A0 (en) 1998-11-26
BR9913950B1 (en) 2010-07-13
PT1125016E (en) 2003-07-31
US6767432B1 (en) 2004-07-27
DE69906347T2 (en) 2003-12-04

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MKEX Expiry

Effective date: 20190923